BLM18EG221SN1D
Manufacturer
Model
BLM18EG221SN1D
Category
The BLM18EG221SN1D ferrite bead provides effective EMI suppression with 50mΩ DC resistance and 220Ω impedance at 100MHz, optimized for surface-mount applications in consumer electronics and telecommunications equipment. Its 2A current rating and 0603 package ensure compact integration while maintaining thermal reliability through 15°C/W impedance. Critical design considerations include proper placement within 5mm of noise sources and validation under 1GHz frequency conditions to ensure optimal performance.
Reference Pricing
Reference Stock
Specifications
| Brand | Murata |
| Color | Not specified |
| Dimensions | 1.1 max. |
| Environmental Adaptability | Not specified |
| Frequency Response | 100MHz±1MHz，1GHz±1MHz |
| Impedance | 220Ω |
| Material | Glass epoxy resin |
| Operating Temperature Range | Not specified |
| Package | SMD |
| Rated Voltage | Not specified |
| Weight | Not specified |
Function And Role
Core Function
Noise suppression and EMI filtering in electronic circuits
Key Characteristics
- 50mΩ DC resistance (±25% tolerance)
- 220Ω impedance at 100MHz
- 2A current rating
- 0603 package (Tape & Reel packaging)
- Single-circuit design
Application Domains
Basic Scenarios
- Consumer electronics EMI filtering
- Industrial equipment noise suppression
- Telecommunications base station filtering
Extended Scenarios
- High-frequency signal lines in 5G devices
- Automotive CAN bus noise mitigation
- Medical equipment power supply filtering
Precautions
| Soldering | Maximum soldering temperature: 260°C (2 seconds per pad) |
| Current Limit | Continuous current must not exceed 2A |
| Voltage Limit | Operating voltage up to 100VDC |
| Thermal Management | Thermal impedance: 15°C/W |
| Storage | Store in dry environment below 30°C |
| Risk Warnings |
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Alternative Model Params
- DC resistance (±20% tolerance)
- Impedance at 100MHz (200-250Ω range)
- Current rating (1.8-2.2A range)
- Package size (0603 equivalent)
Design Recommendations
| Layout | Place within 5mm of noise source |
| Thermal | Use 1W thermal pad for heat dissipation |
| Compatibility | Verify with 4-layer PCB stackup |
| Testing | Validate with 1GHz Bode plot testing |
Market Positioning
| Strengths |
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| Weaknesses |
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Datasheet
Assist inquiry
Distributors
Shenzhen Rongda Wei Electronic Technology Co., Ltd.
Shenzhen Xinyazhou Electronic Market Donglidao Electronic Business Department
Shenzhen Zhongxing Tai Electronic Co., Ltd.
Shenzhen Weijiesheng Electronics Co., Ltd.
Shenzhen Dongxing Microelectronics Technology Co., Ltd.
Shenzhen Chaoxin Electronics Co., Ltd.
Shenzhen Fuliwei Technology Co., Ltd.
Shenzhen Futian New Asia Electronic Market Phase II Dechengfa Electronic Merchants
Shenzhen Yunze Expansion Electronics Co., Ltd.
Shenzhen Liyuan Gaokang Electronic Co., Ltd.
Shenzhen Xingkechuang Electronic Co., Ltd.
Shenzhen Dake Sheng Electronic Co., Ltd.
Shenzhen Chuangye Crystal Oscillator Technology Co., Ltd.
Shenzhen Futian District Hanwei Xing Electronic Business
Shenzhen Hongkai Xuan Technology Co., Ltd.
Shenzhen Yu Hong Technology Co., Ltd.
Shenzhen Jiesheng Electronic Development Co., Ltd.
Shenzhen Jingdeli Technology Co., Ltd.
Shenzhen Yuxiang Electronic Trade (Individual Proprietorship)
Shenzhen Jinghongfeng Electronic Co., Ltd.
Shenzhen Mingweida Trading Co., Ltd.
Shenzhen Qino Electronics Co., Ltd.
Shenzhen Juyuanxin Electronic Co., Ltd.
Shenzhen Nangeng Electronic Co., Ltd.
Shenzhen Rongzu Yigou Electronic Co., Ltd.
Shenzhen Wenxinwei Electronic Co., Ltd.
Shenzhen Futian District Tandagaoke Electronic Business Department
Shenzhen Weikexin Electronic Technology Co., Ltd.
Shenzhen Yuanliyuan Science and Technology Co., Ltd.
Shenzhen Hongye Electronic Business Department (Individual)